Interior policy and foreign policy

Then what is the matter with you that you are divided into two parties about the hypocrites? Allâh has cast them back (to disbelief) because of what they have earned. Do you want to guide him whom Allâh has made to go astray? And he whom Allâh has made to go astray, you will never find for him any way (of guidance).

They wish that you reject Faith, as they have rejected (Faith), and thus that you all become equal (like one another). So take not Auliyâ' (protectors or friends) from them, till they emigrate in the Way of Allâh (to Muhammad SAW). But if they turn back (from Islâm), take (hold of) them and kill them wherever you find them, and take neither Auliyâ' (protectors or friends) nor helpers from them.

Except those who join a group, between you and whom there is a treaty (of peace), or those who approach you with their breasts restraining from fighting you as well as fighting their own people. Had Allâh willed, indeed He would have given them power over you, and they would have fought you. So if they withdraw from you, and fight not against you, and offer you peace, then Allâh has opened no way for you against them.

You will find others that wish to have security from you and security from their people. Every time they are sent back to temptation, they yield thereto. If they withdraw not from you, nor offer you peace, nor restrain their hands, take (hold of) them and kill them wherever you find them. In their case, We have provided you with a clear warrant against them.

An-Nisa 88-91